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Simplifying
16x2 + -40 = 9
Reorder the terms:
-40 + 16x2 = 9
Solving
-40 + 16x2 = 9
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '40' to each side of the equation.
-40 + 40 + 16x2 = 9 + 40
Combine like terms: -40 + 40 = 0
0 + 16x2 = 9 + 40
16x2 = 9 + 40
Combine like terms: 9 + 40 = 49
16x2 = 49
Divide each side by '16'.
x2 = 3.0625
Simplifying
x2 = 3.0625
Take the square root of each side:
x = {-1.75, 1.75}
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